Commit Graph

5 Commits

Author SHA1 Message Date
Daniel Neilson 6e938effaa Change memcpy/memove/memset to have dest and source alignment attributes (Step 1).
Summary:
  Upstream LLVM is changing the the prototypes of the @llvm.memcpy/memmove/memset
intrinsics. This change updates the Clang tests for this change.

  The @llvm.memcpy/memmove/memset intrinsics currently have an explicit argument
which is required to be a constant integer. It represents the alignment of the
dest (and source), and so must be the minimum of the actual alignment of the
two.

 This change removes the alignment argument in favour of placing the alignment
attribute on the source and destination pointers of the memory intrinsic call.

 For example, code which used to read:
   call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 100, i32 4, i1 false)
will now read
   call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 %dest, i8* align 4 %src, i32 100, i1 false)

 At this time the source and destination alignments must be the same (Step 1).
Step 2 of the change, to be landed shortly, will relax that contraint and allow
the source and destination to have different alignments.

llvm-svn: 322964
2018-01-19 17:12:54 +00:00
Alexey Bataev a8a9153a37 [OPENMP] Support for -fopenmp-simd option with compilation of simd loops
only.

Added support for -fopenmp-simd option that allows compilation of
simd-based constructs without emission of OpenMP runtime calls.

llvm-svn: 321560
2017-12-29 18:07:07 +00:00
Alexey Bataev 3f82cfc329 [OPENMP] Fix handling of clauses in clause parsing mode.
The compiler may generate incorrect code if we try to capture the
variable in clause parsing mode.

llvm-svn: 320590
2017-12-13 15:28:44 +00:00
Alexey Bataev c2e88a8a6b [OPENMP] Fix PR35486: crash when collapsing loops with dependent iteration spaces.
Though it is incorrect from point of view of OpenMP standard to have
dependent iteration space in OpenMP loops, compiler should not crash.
Patch fixes this problem.

llvm-svn: 319700
2017-12-04 21:30:42 +00:00
Alexey Bataev 617db5f822 [OPENMP] Codegen for `distribute simd` directive.
Initial codegen support for `distribute simd` directive.

llvm-svn: 319661
2017-12-04 15:38:33 +00:00